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How to create relationships in MySQL
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Here are a couple of resources that will help get started: http://www.anchor.com.au/hosting/support/CreatingAQuickMySQLRelationalDatabase and http://code.tutsplus.com/articles/sql-for-beginners-part-3-database-relationships--net-8561
Also as others said, use a GUI - try downloading ...
How to get the index of a maximum element in a numpy array along one axis
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argmax() will only return the first occurrence for each row.
http://docs.scipy.org/doc/numpy/reference/generated/numpy.argmax.html
If you ever need to do this for a shaped array, this works better than unravel:
import numpy as np
a = np.array([[1,2,3], [4,3,1]]) # Can be of any shap...
Change column type from string to float in Pandas
...y what you want, but what if you wanted to save some memory and use a more compact dtype, like float32, or int8?
to_numeric() gives you the option to downcast to either 'integer', 'signed', 'unsigned', 'float'. Here's an example for a simple series s of integer type:
>>> s = pd.Series([1, 2...
Can't find the 'libpq-fe.h header when trying to install pg gem
...l-9.3/bin/p* /usr/local/bin. I installed postgres 9.3 like so: yum install http://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-redhat93-9.3-1.noarch.rpm && yum install postgresql93 postgresql93-contrib postgresql93-server postgresql93-devel
– JoePasq
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MySQL: selecting rows where a column is null
...nything,
including itself (ie: NULL = NULL is always false).
See Rule 3 https://en.wikipedia.org/wiki/Codd%27s_12_rules
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what does -webkit-transform: translate3d(0,0,0); exactly do? Apply to body?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Why can't I forward-declare a class in a namespace using double colons?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Difference between the 'controller', 'link' and 'compile' functions when defining a directive
...l>
and you want to access animal from inside of "leopard" directive.
http://egghead.io/lessons/angularjs-directive-communication will be helpful to know about inter-directive communication
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When to use Task.Delay, when to use Thread.Sleep?
...en and gracefully kill it. Thats one reason I would choose Task.Delay. see http://social.technet.microsoft.com/wiki/contents/articles/21177.visual-c-thread-sleep-vs-task-delay.aspx
I also agree efficiency is not paramount in this case.
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How do I move a file with Ruby?
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Use the module 'fileutils' and use FileUtils.mv:
http://www.ruby-doc.org/stdlib-2.0/libdoc/fileutils/rdoc/FileUtils.html#method-c-mv
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